Compression-operated ignition device.



,w. F. STANTON. COMPRESSION OPERATED IGNITION DEVICE.

APPLICATION FILED NOV- 9.1916- Patented Sept. 17,1918;

Deni-071 W; F. STANTON.

COMPRESSION OPERATED QGNITION DEVICE.

APPLICATION FILED NOV. 9, 1916- Q I I PatentedSept. 17,1918.

, w. F. STANTON. COMPRESSION OPERATED IGNITION DEVICE.

; I I APPLICATION FILED NOV-9,1916. I 1,279,473. PatentedSept. 17,1918.

3 SHEETS.SHEET 3.

J6 dfgal 45 J5 I 38 I frzvenior' UNITED STATES PATENT OFFICE.

WARREN F. STANTON, OF PA'W'IUCKET, RHODE ISLAND, ASSIGNOB T KATIE C. .MESSLER, OF I'AWTUCKET, RHODE ISLAN D.

GOmESSION-OPE'B-ATED IGNITION DEVICE.

To all whom it may concern.

Be it known that I, WARREN F. STANTON, a citizen of the United States, residing at Pawtuoket, in the county of Pawtucket and State of Rhode Island, have invented certain new and. useful Improvements in Com pression O erated Ignition Devices, of which the ollowing is a specification.

My invention relates to compression operated ignition devices adapted for internal combustion engines, pumps and other dev1ces.

The essential object of my invention is to produce acom ression operated ignition de vice that is e ective in operation upon engines and power mechanisms of low speed. Further objects, are to insure, in such ignition devices applied to low. speed mechanisms, an effective spark at a minimum rate of compression,,as well as, sparks of uniform intensity, and correctly timed, and capable of adjustable tirning.

The invention-consists in employing the compressed charge solely to store up energy in the impelling spring by the outward piston stroke, and in relying exclusively upon said impelling spring'to generate the current and to open the circuit, so that the piston is entirely free of the generating member during the current generating and circuit breaking period. Other novel features will hereinafter appear and will formthe subject matter of claims hereto appended.

In the accompanying drawings which form a part of this specification Figures 1 and 2 are plan and side'elevations respectively of my device, showing the adjacent portion of an engine cylinder in section, I a

' Fig. 3, a section on line 3-3 of F g. 2,

Fig. 4, a partial section on line 4 -4 of Fig. 3, I g

' ig. 5, a bottom plan vlew of a portion of my device,

Fig. 6, a transverse section of the device on line 6-6 of Fig. 3,

Fig. 7, a rear elevation of the device,

Fig. 8, a section on line 8-8 of Fig. 2,

Fig. 9, a section of the device corresponding to the section shown in Fig. 3, but showing the operative parts in another posltion, 1nd I Fig. 10, a section on line 10-10 of Fig. 9.

L Specification of Letters latent.

mounted.

an open top covered by a Patented Sept. 17, 19.18.

Application filed November 9, 1916. Serial No. 130,332.

Similar reference numerals indicate similar parts throughout the views.

In the drawings 13 is the cylinder wall, and 14 the combustion chamber of an internal combustion. engine in which my device in the lpxresent instance is shown to be e plug portion 16 of my igniter 1s located in an opening 17 in the cylinder Wall, and a flange 18 thereon is attached to the wall by bolts 19 entering threaded cavities 20.

A bracket arm 22 has an'attachingplate 23 engaged by screws 24; to the flange 18, and is integral with the magneto casing 26 comprising a hollow upper portion 27 with plate 29 attached by screws 31. The casing portion 27 has .opposite horizontal extensions 33 and 34.

The ,extension 33 has 'a bore 35 extending to 'a piston chamber 36 extending'jthrough the plug; within whichbore is a bushing sleeve 38. In the chamber 36 is a piston 40 Whose end face is exposed in the chamber 14. The piston rod in this case comprises a section 42 rigid with the piston'and a section 43 connected to the first by a joint as at 45. The piston rod or section 43 extends through the ushing 38, across the casing portion 27 and into'the extension 34, and is slidable in an extended portion 47 of the latter provided withexternal threads 48. These threads engage threads 50 in one end of a barrel 51. The portion 47 is ofless internal diameter thanthat ofjthe barrel 51. whereby there is formed an internal stop shoulder 53 in the path of a plate 54 fixedby a screw 55 or otherwise to the end ofthe piston rod] This plate, which is of greater diameter than the rod, may be integral with thelatter. internally threaded milled cap 56 i's'removably engaged with the externally threaded end of the tube 51 and 'has'beariing against its inner face one end of a helical spring 59 whose other end bears against the end of the piston or the platef54. This cap operates on the spring as an adjustment, wherej by the outward movement'of-the piston is delayed until the pressure in the cylinder is increased, thus retardin the spar The extension 33 has'a so a'pa'ssage 60. parallel with the-bore 35; and there is. a

passage 61 in'alinement therewith in the" plug.' In these two passages is an axially IOB movable electrode 63 having a contact finger 64 on its end within the chamber 14. Upon- On the other end of t e electrode is a bindin post 78.

The magne'to or generator comprises the casing 26 carrying the magnets 80, and the armature shaft 81 journaled in upper and lower bearings 82 and 83. Fast on the upper end of the shaft is fixed a crank disk or arm 84 carrying a crank pin 85 which is in the path of a flange 87 on the piston section 43, but out of the path of a stop shoulder 88 on the latter. The front face 0 theshoulder 87 is plane, and the rear face'is frusto conical forming a longitudinally disposed curved recess in the iston 43. The shoulder 88 merely limits t e outward travel of the pistoni The pin 85 isalso'adapted to contact with a cam surface 90 .on the bottom of the finger 68. The frame 26 of the magneto includes a bottom plate 91 integral with the bearing 83. Near theend of this plate is a post} 93 through which passes an ad ust1ng screw 94 upon which is ..a.thumb nut 95.

Fast to one downwardly projecting end of the armature shaft is a crank arm 97 carry ing a crank pin 98- to which is fixed one end of a spring 99 whose other end engages the screw 94. The crank arm 97 is axially adjustable on its shaft by a binding screw 100. The. armature winding 101 of the magneto has one terminal 102 grounded in the armature shaft, and its other terminal, 103 passes through an opening 104 into a central longitudinal passage 105 in the-upper end of the armature shaft, and is insulated therefrom by material 106, and is connected to a binding post 107, from which extends the wire 108 passing through an opening 109 in the casing to the binding post 7 8.

The operation of my device is as follows:

- The compressed engine charge in thechamber 14 outwardly moves the piston 40, piston rod 43, and flange, 87, which are normally positioned as shown in Fig. 3, whereby the flange in its outward movement moves the crank pin 85 and its arm or disk 84 in the direction of the arrow in said figure, thus increasing the tension of the spring 99 or.

storing up energy therein. When the parts have reached the point shown in Fig. 9 the pin 85 is released by the flange which slides over the same. the pin oscillates in the opposite direction At the instant of release as shown by the arrow in' the latter figure, being impelled wholly by the stored up energy of spring 99 and at greater speed than that of the piston, and strikes the beveled or cam-surface 90 of the member 68, thus moving the finger 64 of the electrode 63 to break the circuit and produce a spark to ignite the compressed charge. The spring 59 returns the rod 43 and flange 87 to original position. In its return the flange, while contacting with the pin, merely'presses the latter out of the way without difiiculty as the spring 99 permits the pin to yield. The spring 69 returns the finger 68 to original depressed position in the path of the pin.

A second means for timing the spark and adapting the device to varying compressions" within the cylinder is the nut 95 operating on the screw 94 to vary the tension on ing the crank member, and a piston actuated by the engine charge movable independently of the generating member slidably engaging.

and retracting the crank member.

2. In a compression operated ignition device, the combination with the current generating member and the circuit, of an oscillatory crank member. on the generating member adapted by its advance inward or current generating movement to break-the circuit, a spring connected to the generating member for impartingsaid movement to the crank member, and means,'a piston movable independently of the generating member and actuated by the engine charge for netracting the crank member and for releasing the same after saig retraction. a

3. In a compres on operated ignition device, the combination with th'ecurrent generating member and the circuit, of an oscillatory crank member on the generating.

member adapted by its vibration to intermittently break the circuit, a spring attached to the generating member for moving the crank member in one direction of its vibration, and a piston actuated by the engine char e intermittently engaging the crank mem er to move the crank member in the opposite direction of its vibration.

I 4. In acompression operated ignition device, the combination with the current genera-ting member and the circuit, of an oscillatory crank member on the generatinginember adapted in one direction of its vibration to break the circuit, a spring connected with the generating member for impelling the crank member in the direction to break '89 lida'blyf h d moving the same, in fth'e e ratum on ie'tbn non-engageable rectlon r'r riatl' ir'e 11; the opposite In; a. compress'jqnpperated ignitlpn dethe combinatl dn-nwiththe piston and 85 jectionduringa, portion only of theou'tward t \fthe piston, and'means on the armaor inwardlyieselling' the crank ,mem

thantthe speedof thev I prmectmm I q 13. In acomp ress ibndperate gmtlonfde ta; greater ap mtumingpistbn; I v ja compressidn operated ignitipn de-i be; the eombinetion iWlth the plston actu ted' by theenginecharge and th e pistdn rod, im ringpm "alinement with the piston and the im'd: to return the piston,

rojmtw n the pistdn fed, a circuit, an

xmll "Movable armature, {crank member mature in the path of 'the projec-f and:--a{apring formevin the crank indepehdenfly of the plston I110d.l' In aeom ress' jeetlo on the piston rod, means for adension fithe'S ring; a eireuit ovable, armature, a crank/mam mature ime of the projecti Pt di wi w d 'rcuit, a spring en: A w rd y .mbv

twai dly;

:tulre, a pin on" 0 3mm to 1 the crank mmber,

aha pietdn mi N n it Q memberf f the an gi ne eh'erge ,ferdutwai dly retractf v th ferank membe'rland ,fqnfiel th member after said retl act ereted igpltt flyjce, the; eombmetion wlthfthe vlbmtoryielectrqde inthe frame; "tor-y armature in the frameya frame actuated by the jection hi1. thqgsmn;

' m' ng byseid projection during theolitwerd tro of: the pistOmand m ihent meansi 'r ing 1 the pin jinto operative-icontact 'ele'ctrode after -themeleeee qf the' pln ice, the con ibinati bn with the fr e oscillatpry armature in thefmme,

"em; upon one end of the armetiiie, a) k connedting the crankkiu m to an 'adJa'oen part of theframgen arm v, eg o 6f the armature, alpin onl thd'secon piston in'the frameactuate by the I operated ignition dea I the com inagtio with the piston and ohrod' of, spring inalinement Withthe tongajnd in "contact with thepisfmi ,IOdQa JP PJ BC iOn, and yiel d the" renk d uSti thel'ength'of'the spring ilelindepehdentlyaof the 

